David and Louise Turpin face a second arraignment on Friday, more than a month after a judge ruled there was enough evidence for them to stand trial in a child abuse and torture case that has captivated the world.

The Turpins, of Perris, will return to Riverside County Superior Court for what's likely to be a brief appearance that will, nonetheless, draw observers and attract attention. The hearing is scheduled for a 8:30 a.m. start in Riverside.

The couple gained notoriety after their January arrests on suspicion of abusing and torturing their 13 children who, according to investigators, endured years of starvation, beatings and captivity.

The abuse was so bad, officials have said, that the siblings suffer long-term disabilities that include stunted growth.

They were rescued after one of the children, a 17-year-old girl, escaped after two years of planning and called authorities using a cell phone she hid from her parents.

Prosecutors played her chilling 911 call during the parents' preliminary hearing in June. For 20 minutes, she pleaded with a dispatcher to send help for her and her 12 brothers and sisters.

“I live in a family of 15 people and my parents are abusive," the girl told the dispatcher. "They abuse us and my two little sisters are chained up.”

The Turpin home sits empty on Muir Woods Road in Perris. It used to be occupied by 13 malnourished siblings who were removed in January. Their parents were arrested on suspicion of child abuse and torture.(Photo: Colin Atagi/The Desert Sun)

A photo of those chained girls capped off a hearing filled with disturbing evidence implicating both parents.

Little has been disclosed about why the children endured such reported abuse and all officials have said is that it at least dates back to the 1990s, when the family lived in Texas and some of the siblings weren't even born.

Not even David Turpin appeared to deny his children had been abused. During the preliminary hearing, his attorney, David Macher, pointed fingers at Louise Turpin and emphasized that she abused her children while her husband was at work.

The abuse included punching, choking and slapping children for the smallest infractions, including watching a Justin Bieber video.

The allegation did not faze Judge Bernard Schwartz, who countered that David Turpin had a responsibility as a parent to protect his children, but did not.

Riverside District Attorney Michael Hestrin gives a news conference at the D.A.'s office in Riverside on Jan. 18, 2018, regarding the charges of child endangerment and torture against David and Louise Turpin after several children and adults found in their care were said to be under precarious living conditions.(Photo: Omar Ornelas/The Desert Sun)

Both parents are charged with 12 counts of torture and false imprisonment, nine counts of child abuse and seven counts of cruelty to a dependent adult. David Turpin also faces one count of lewd acts on a child under 14 years old, and his wife is charged with assault resulting in great bodily injury.

Each parent remains in custody with bail set at $12 million after pleading not guilty to all charges. They each face life in prison if convicted.

The case drew international attention, as reporters from across the country flocked to Muir Woods Road, as well as Saint Honore Drive in Murrieta, where the Turpins previously lived.

Authorities contend David Turpin filed paperwork indicating his children were homeschooled, but investigators say most of them are barely educated. Investigators say some of the siblings were unfamiliar with the concepts of police or medication.

The siblings, who range in age from 2 to 29, now suffer from stunted growth and at least two of the girls are unable to have children, officials say.

The victims have been living at local medical facilities since January, but media outlets reported in June that the older children quietly visited Riverside County Superior Court officials to discuss their conservatorship.